Rooftop support block



FIG. 1 is a top perspective view of a rooftop support block made in accordance with the subject design, FIGS. 1-3, 5 and 6 being shown broken apart to indicate indeterminate length;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is an end elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

CLAIM The ornamental Design for a rooftop support block, as shown and described. 